6545405756 has 48 divisors (see below), whose sum is σ = 12252441600. Its totient is φ = 3048772608.

The previous prime is 6545405729. The next prime is 6545405759. The reversal of 6545405756 is 6575045456.

It is a self number, because there is not a number n which added to its sum of digits gives 6545405756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6545405759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6122390 + ... + 6123458.

It is an arithmetic number, because the mean of its divisors is an integer number (255259200).

Almost surely, 2^6545405756 is an apocalyptic number.

It is an amenable number.

6545405756 is a deficient number, since it is larger than the sum of its proper divisors (5707035844).

6545405756 is a wasteful number, since it uses less digits than its factorization.

6545405756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1924 counting only the distinct ones).

The product of its (nonzero) digits is 2520000, while the sum is 47.

The square root of 6545405756 is about 80903.6819681280. The cubic root of 6545405756 is about 1870.5910755075.

The spelling of 6545405756 in words is "six billion, five hundred forty-five million, four hundred five thousand, seven hundred fifty-six".